P5: Guidelines for Electronic Text Encoding and Interchange

<rng:element name="w">
 <rng:ref name="att.global.attributes"/>
 <rng:ref name="att.segLike.attributes"/>
 <rng:ref name="att.metrical.attributes"/>
 <rng:ref name="att.typed.attributes"/>
 <rng:optional>
  <rng:attribute name="lemma">
   <rng:ref name="data.key"/>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:attribute name="lemmaRef">
   <rng:ref name="data.pointer"/>
  </rng:attribute>
 </rng:optional>
 <rng:zeroOrMore>
  <rng:choice>
   <rng:text/>
   <rng:ref name="model.gLike"/>
   <rng:ref name="seg"/>
   <rng:ref name="w"/>
   <rng:ref name="m"/>
   <rng:ref name="c"/>
   <rng:ref name="model.global"/>
   <rng:ref name="model.lPart"/>
   <rng:ref name="model.hiLike"/>
   <rng:ref name="model.pPart.edit"/>
  </rng:choice>
 </rng:zeroOrMore>
</rng:element>

element w
{
   att.global.attributes,
   att.segLike.attributes,
   att.metrical.attributes,
   att.typed.attributes,
   attribute lemma { data.key }?,
   attribute lemmaRef { data.pointer }?,
   (
      text
    | model.gLike
    | seg
    | w
    | m
    | c
    | model.global
    | model.lPart
    | model.hiLike
    | model.pPart.edit
   )*
}